However, the story could be different for the future titles. Here is what the head of Xbox said:
"I don't want to get into the world where we're looking back... it doesn't mean there's nothing [in Halo 5] that could ever end up on PC, but I'd much rather look forward with what our plans are."
"You should expect [releases on both Xbox One and PC] when franchises look like they belong on both platforms, but I wouldn’t go so far as to say it’s a mandate for the studios because it’s not."
As you may know, there are a few games that have transitioned to PC: Forza 6, Killer Instinct, and Quantum Break.